CODEWITHSUNDEEP
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AlrightyRob
AlrightyRob

Reputation: 163

Method in NSTimer Selector is invalid

self.presentViewController(playerViewController, animated: true){
        self.playerViewController.player?.play()
        self.playerTimer = NSTimer.scheduledTimerWithTimeInterval(4, target: self, selector:Selector("stopAfter4seconds:"), userInfo: nil, repeats: false)
    }

    func stopAfter4seconds(timer: NSTimer){
    self.playerViewController.player?.pause()
    self.playerViewController.player = nil
    self.dismissViewControllerAnimated(true, completion: nil)
    self.presentViewController(GameViewController1(), animated: true, completion: nil)
    }
}

So.. I've tried just about everything to get this NSTimer to work and nothing seems to go correctly. I've tried:

  1. Adding & Removing colon in between

    ("stopAfter4seconds:")

  2. Adding & Removing the (timer:NSTimer) in the parameter of the 

    stopAfter4seconds()

  3. Adding & Removing the second Selector in 

    selector:Selector("stopAfter4seconds:")

Errors I'm getting:

  1. stopAfter4seconds]: unrecognized selector sent to instance 0x7bb1ae90

  2. Terminating app due to uncaught exception 'NSInvalidArgumentException'

  3. Thread 1 : signal SIGABRT

I have no idea what I'm doing wrong so please if anyone has any idea let me know.

Upvotes: 2

Views: 106

Answers (2)

Rob
Rob

Reputation: 437542

If the method is defined like so:

func stopAfter4seconds(timer: NSTimer) { ... }

Then you'd create the timer like so:

NSTimer.scheduledTimerWithTimeInterval(4, target: self, selector: Selector("stopAfter4seconds:"), userInfo: nil, repeats: false)

Or you can omit Selector() and just do:

NSTimer.scheduledTimerWithTimeInterval(4, target: self, selector: "stopAfter4seconds:", userInfo: nil, repeats: false)

It would appear, though, that you've implemented this stopAfter4seconds function inside the method that called presentViewController. This stopAfter4seconds, itself, must be a method, not defined inside another method.

Upvotes: 1

fatihyildizhan
fatihyildizhan

Reputation: 8832

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func viewDidAppear(animated: Bool) {
        print("run viewDidAppear")
        myFunction1()
    }


    func myFunction1() {
        print("call timer")
        NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: Selector("myFunction2"), userInfo: nil, repeats: false)
    }

    func myFunction2(){
        print("do stuff")
    }
}

Upvotes: 1

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